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Servicenow LeetCode Questions 2026

Browse LeetCode problems frequently asked by Servicenow. Filter by difficulty and timeframe to focus your interview prep.

Last updated: 10 July 2026

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Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Two Sum	EASY	62.5%	ArrayHash Table
Longest Substring Without Repeating Characters	MEDIUM	100%	Hash TableStringSliding Window
Median of Two Sorted Arrays	HARD	50%	ArrayBinary SearchDivide and Conquer
Longest Palindromic Substring	MEDIUM	62.5%	Two PointersStringDynamic Programming
Zigzag Conversion	MEDIUM	50%	String
Container With Most Water	MEDIUM	75%	ArrayTwo PointersGreedy
Valid Parentheses	EASY	75%	StringStack
Generate Parentheses	MEDIUM	87.5%	StringDynamic ProgrammingBacktracking
First Missing Positive	HARD	75%	ArrayHash Table
Trapping Rain Water	HARD	87.5%	ArrayTwo PointersDynamic ProgrammingStackMonotonic Stack
Group Anagrams	MEDIUM	62.5%	ArrayHash TableStringSorting
Maximum Subarray	MEDIUM	62.5%	ArrayDivide and ConquerDynamic Programming
Merge Intervals	MEDIUM	50%	ArraySorting
Best Time to Buy and Sell Stock	EASY	62.5%	ArrayDynamic Programming
Vowels of All Substrings	MEDIUM	50%	MathStringDynamic ProgrammingCombinatorics
LRU Cache	MEDIUM	100%	Hash TableLinked ListDesignDoubly-Linked List
Maximum Product Subarray	MEDIUM	50%	ArrayDynamic Programming
Largest Number	MEDIUM	50%	ArrayStringGreedySorting
Number of Islands	MEDIUM	87.5%	ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Reverse Linked List	EASY	50%	Linked ListRecursion

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